JP2012045629A - Apparatus for polishing part line of resin molding and method of polishing the same - Google Patents
Apparatus for polishing part line of resin molding and method of polishing the same Download PDFInfo
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- JP2012045629A JP2012045629A JP2010186939A JP2010186939A JP2012045629A JP 2012045629 A JP2012045629 A JP 2012045629A JP 2010186939 A JP2010186939 A JP 2010186939A JP 2010186939 A JP2010186939 A JP 2010186939A JP 2012045629 A JP2012045629 A JP 2012045629A
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- 238000005498 polishing Methods 0.000 title claims abstract description 477
- 229920005989 resin Polymers 0.000 title claims abstract description 260
- 239000011347 resin Substances 0.000 title claims abstract description 260
- 238000000465 moulding Methods 0.000 title claims abstract description 17
- 238000007517 polishing process Methods 0.000 title description 7
- 238000003825 pressing Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000007747 plating Methods 0.000 claims description 12
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 10
- 239000004071 soot Substances 0.000 claims description 8
- 230000008030 elimination Effects 0.000 claims description 6
- 238000003379 elimination reaction Methods 0.000 claims description 6
- 230000037303 wrinkles Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 10
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007494 plate polishing Methods 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
本発明は、樹脂めっき処理前の樹脂成形品のパートライン、即ちばりを研磨する研磨技術に係り、特に凹凸部、角部や曲面部を有する樹脂成形品の周囲に形成されたパートラインを研磨する樹脂成形品のパートライン研磨装置及びその研磨方法に関する。 The present invention relates to a part line of a resin molded product before resin plating treatment, that is, a polishing technique for polishing a flash, and in particular, to polish a part line formed around a resin molded product having uneven portions, corner portions and curved surface portions. The present invention relates to a part-line polishing apparatus for a resin molded product and a polishing method thereof.
樹脂めっきを施す樹脂成形品については、それを樹脂めっきした際に、クラック（割れ）が生じやすいので、樹脂成形する際に形成された外周部のパートラインを研磨している。また、直接人の手が触れる樹脂成形品については、パートラインを必ず研磨する必要がある。例えば、図１１に示すように合成樹脂製の取っ手５１のような樹脂成形品Ｗについては、金型成形の際にその接合部に形成されたパートライン５２を研磨していた。 About the resin molded product which resin-plats, since it is easy to produce a crack (crack) when it resin-plates, the part line of the outer peripheral part formed at the time of resin molding is grind | polished. Moreover, it is necessary to polish a part line about the resin molded product which a human hand touches directly. For example, as shown in FIG. 11, for a resin molded product W such as a synthetic resin handle 51, the part line 52 formed at the joint portion thereof is polished at the time of molding.
従来は、このような樹脂成形品のパートラインについては、一つ一つの樹脂成形品を手作業で研磨していた。しかし、１個の樹脂成形品の研磨作業に約３０秒から２分以上もかかり研磨処理に長時間を要していた。しかも、手作業の研磨はバラツキが多く、製品の一定品質を維持することが困難であった。 Conventionally, for each part line of such resin molded products, each resin molded product has been manually polished. However, it took about 30 seconds to 2 minutes or more to polish one resin molded product, and the polishing process took a long time. Moreover, manual polishing has many variations, and it has been difficult to maintain a constant quality of the product.
そこで、樹脂成形品を自動研磨する技術が提案されている。例えば、特許文献１の特開２０００−１７６８０７号公報「樹脂成形品のばり取り装置」のように、板状の樹脂成形品の外周部のばりを除去するための樹脂成形品のばり取り方法であって、複数の上記樹脂成形品を積層し、該積層状態の樹脂成形品の外周部に１以上の回転ブラシを接触させた状態で、該回転ブラシを回転駆動しつつ上記積層状態の樹脂成形品と上記回転ブラシとを該樹脂成形品の積層方向に相対移動させて各樹脂成形品の外周部のばりを順次除去する樹脂成形品のばり取り方法が提案されている。 Thus, a technique for automatically polishing a resin molded product has been proposed. For example, as disclosed in Japanese Patent Application Laid-Open No. 2000-176807 “Resin deburring device for resin molded products”, a deburring method for resin molded products for removing deburring on the outer periphery of a plate-shaped resin molded product. A plurality of the resin molded products are stacked, and the one or more rotating brushes are in contact with the outer peripheral portion of the stacked resin molded product, and the rotating brush is rotationally driven while the stacked resin molded products are stacked. There has been proposed a deburring method for a resin molded product in which the burr on the outer peripheral portion of each resin molded product is sequentially removed by relatively moving the product and the rotating brush in the stacking direction of the resin molded product.
また、特許文献１には、積層状態の樹脂成形品を外周部の一部を露出させて積層方向に移動可能に案内支持する第１ガイド部と、上記第１ガイド部上の樹脂成形品の上記露出部分のばりを除去する第１回転ブラシと、上記第１ガイド部に接続して設けられ、上記積層状態の樹脂成形品を外周部の上記第１回転ブラシによるばりの除去が行われない部分を露出させて積層方向に移動可能に案内支持する第２ガイド部と、上記第２ガイド部上の樹脂成形品の上記露出部分のばりを除去する第２回転ブラシと、上記各樹脂成形品の外周部のばりが上記第１及び第２回転ブラシにより順次除去されるように上記積層状態の樹脂成形品を上記第１及び第２ガイド部上で積層方向に移動させる移動機構とを備えていることを特徴とする樹脂成形品のばり取り装置が提案されている。 Further, Patent Document 1 discloses a first guide part that guides and supports a resin molded product in a laminated state so that a part of the outer peripheral part is exposed and movable in the lamination direction, and a resin molded product on the first guide part. The first rotating brush that removes the flash of the exposed portion and the first guide portion are provided so as to be connected to the first guide portion, and the flash is not removed by the first rotating brush on the outer peripheral portion of the laminated resin molded product. A second guide portion that exposes the portion and guides and supports the movable portion in the stacking direction; a second rotating brush that removes flash of the exposed portion of the resin molded product on the second guide portion; and each resin molded product A moving mechanism for moving the laminated resin molded product in the laminating direction on the first and second guide portions so that the flash of the outer peripheral portion is sequentially removed by the first and second rotating brushes. Deburring resin molded products characterized by Devices have been proposed.
特許文献１のばり取り方法、ばり取り装置は、スリットを有するような外周形状であっても、樹脂成形品のばり以外の部分に傷を付けることなく、かつ整列状態のままでばりの除去作業を行い、ブロックベルトのブロックのような板状の樹脂成形品の外周部のばりを除去することができる。しかし、合成樹脂製の取っ手のような凹凸部と曲面部を共に有する樹脂成形品の外周部のパートラインは研磨することは困難である。即ち、複雑な形状の樹脂成形品については、そのパートラインを円滑に研磨することができないという問題を
有していた。
Even if the deburring method and deburring device of Patent Document 1 have an outer peripheral shape having a slit, the deburring operation is performed without damaging portions other than the flash of the resin molded product and in an aligned state. The flash of the outer peripheral part of a plate-shaped resin molded product like a block of a block belt can be removed. However, it is difficult to polish the part line of the outer peripheral part of the resin molded product having both the uneven part and the curved part such as a handle made of synthetic resin. That is, the resin molded product having a complicated shape has a problem that its part line cannot be polished smoothly.
また、特許文献１のばり取り方法、ばり取り装置では、回転ブラシを採用しているので、樹脂成形品の研磨面に回転方向の傷が付きやすく、その後の樹脂めっきに不具合が生じやすいので、手に触れたときに違和感が生じる製品になりやすいという問題を有していた。 In addition, since the deburring method and deburring apparatus of Patent Document 1 employs a rotating brush, the polishing surface of the resin molded product is easily scratched in the rotation direction, and defects in subsequent resin plating are likely to occur. There was a problem that it was easy to become a product that was uncomfortable when touched.
更に、図１２（ａ）に示すように樹脂成形品Ｗのパートライン５２が樹脂成形品Ｗの上側角部に形成されたものでは、図１３の工程図に示すように、研磨ベルト又は研磨バフの研磨面（ＧＳ）に対して、樹脂成形品Ｗを微妙に傾斜させて研磨する必要があった。傾斜させて研磨しないと、パートライン５２以外の部分を不要に研磨するという問題を有していた。 Furthermore, in the case where the part line 52 of the resin molded product W is formed at the upper corner of the resin molded product W as shown in FIG. 12A, as shown in the process diagram of FIG. It was necessary to polish the resin molded product W with a slight inclination with respect to the polished surface (GS). If it was not inclined and polished, there was a problem that parts other than the part line 52 were unnecessarily polished.
また、図１２（ｂ）に示すように 樹脂成形品Ｗのパートライン５２が樹脂成形品Ｗの下側角部に形成されたものも、研磨ベルト又は研磨バフの研磨面（ＧＳ）に対して、樹脂成形品Ｗを微妙に傾斜させて研磨する必要があった。 In addition, as shown in FIG. 12 (b), the part line 52 of the resin molded product W formed on the lower corner of the resin molded product W can also be applied to the polishing surface (GS) of the polishing belt or the polishing buff. The resin molded product W had to be polished with a slight inclination.
本発明は、かかる問題点を解決するために創案されたものである。すなわち、本発明の目的は、研磨ベルトと、仕上研磨する板状の研磨板とを隣接配置すると共に、樹脂成形品の方向を可変させながら研磨する機構を設けると共に、樹脂成形品のパートラインの位置に応じて研磨ベルト又は研磨バフの研磨面を傾斜させることで、パートラインが様々な形状からなる樹脂成形品の何れも研磨処理することができ、かつ迅速に研磨することができる樹脂成形品のパートライン研磨装置及びその研磨方法を提供することにある。 The present invention has been developed to solve such problems. That is, an object of the present invention is to arrange a polishing belt and a plate-like polishing plate to be polished, and to provide a mechanism for polishing while changing the direction of the resin molded product. By inclining the polishing surface of the polishing belt or the polishing buff according to the position, any resin molded product having a part line of various shapes can be polished, and can be quickly polished. It is another object of the present invention to provide a part line polishing apparatus and a polishing method thereof.
本発明の研磨装置は、樹脂めっきに供され、かつ凹凸部、角部や曲面部を有する樹脂成形品（Ｗ）について、その周囲の接合部に、金型成形の際に形成されたパートライン（５２）を研磨するパートライン研磨装置であって、前記樹脂成形品（Ｗ）を樹脂めっきしたときに、クラックの起点の原因になるパートライン（５２）のばり又は段差を研磨する無端ベルト状の研磨ベルト（１）と、前記研磨ベルト（１）を裏面から押圧して、該研磨ベルト（１）の一部に傾斜面を形成するために、該研磨ベルト（１）を裏面に設けた可動自在になるベルト押圧用プーリ（２１）と、前記研磨ベルト（１）に隣接すると共に、前記樹脂成形品（Ｗ）のパートライン（５２）に、該研磨ベルト（１）の研磨により発生した、樹脂めっきしたときに、クラックの起点の原因になるエッジ部分に、丸みを付けるための仕上研磨をする、該研磨ベルト（１）よりヤスリ目が細かく、かつその硬さも柔らかい、板状の研磨板（２）と、前記樹脂成形品（Ｗ）を担持するワーク保持具（３）と、前記ワーク保持具（３）を樹脂成形品（Ｗ）と共に、所定方向に移動させるワーク保持具可動機構（４）と、から成り、前記研磨ベルト（１）による研磨に引き続いて前記研磨板（２）による仕上研磨するために樹脂成形品（Ｗ）を迅速に移動させるように、該研磨ベルト（１）の研磨する面と、該研磨板（２）の研磨面とにより形成される角度（α）が９０度から１８０度の範囲内になるように、研磨ベルト（１）と研磨板（２）とを配置した、ことを特徴とする。 The polishing apparatus of the present invention is a part line formed at the time of die molding at a joint portion around a resin molded product (W) which is used for resin plating and has uneven portions, corner portions and curved surface portions. A part line polishing apparatus for polishing (52), wherein when the resin molded product (W) is resin-plated, an endless belt shape for polishing a flash or a step of the part line (52) that causes a starting point of a crack. In order to form an inclined surface on a part of the polishing belt (1) by pressing the polishing belt (1) and the polishing belt (1) from the back surface, the polishing belt (1) was provided on the back surface. A belt pressing pulley (21) that is movable, and adjacent to the polishing belt (1) and generated in the part line (52) of the resin molded product (W) by polishing of the polishing belt (1). When resin plating is applied, The plate-like polishing plate (2), which is subjected to finish polishing for rounding the edge portion that causes the starting point of the tape, has a finer file than the polishing belt (1), and its hardness is also soft, A workpiece holder (3) that carries a resin molded product (W), and a workpiece holder movable mechanism (4) that moves the workpiece holder (3) together with the resin molded product (W) in a predetermined direction. A surface of the polishing belt (1) to be polished so that the resin molded article (W) is moved quickly for polishing by the polishing plate (2) following the polishing by the polishing belt (1); The polishing belt (1) and the polishing plate (2) are arranged so that the angle (α) formed by the polishing surface of the polishing plate (2) is in the range of 90 to 180 degrees. Features.
または、樹脂めっきに供され、かつ凹凸部、角部や曲面部を有する樹脂成形品（Ｗ）について、その周囲の接合部に、金型成形の際に形成されたパートライン（５２）を研磨するパートライン研磨装置であって、前記樹脂成形品（Ｗ）を樹脂めっきしたときに、クラックの起点の原因になるパートライン（５２）のばり又は段差を研磨する、略垂直方向に回転するように配置した無端ベルト状の研磨ベルト（１）と、前記研磨ベルト（１）の一部を裏面から押圧して、該研磨ベルト（１）の傾斜面の傾斜角度を可変可能に形成するために、該研磨ベルト（１）を裏面に設けた可動自在になるベルト押圧用プーリ（２１）と
、前記研磨ベルト（１）に隣接すると共に、前記樹脂成形品（Ｗ）のパートライン（５２）に、該研磨ベルト（１）の研磨により発生した、樹脂めっきしたときに、クラックの起点の原因になるエッジ部分に、丸みを付けるために仕上研磨をする、該研磨ベルト（１）よりヤスリ目が細かく、かつその硬さも柔らかい、板状の研磨板（２）と、前記樹脂成形品（Ｗ）を、該パートライン（５２）が略水平方向になるように着脱自在に担持するワーク保持具（３）と、前記ワーク保持具（３）を樹脂成形品（Ｗ）と共に、略水平の所定方向に移動させるワーク保持具可動機構（４）と、から成り、前記研磨ベルト（１）による研磨に引き続いて前記研磨板（２）による仕上研磨するために樹脂成形品（Ｗ）を迅速に移動させるように、該研磨ベルト（１）の研磨する面と、該研磨板（２）の研磨面とにより形成される角度（α）が９０度から１８０度の範囲内になるように、研磨ベルト（１）と研磨板（２）とを配置した、ことを特徴とする。
Alternatively, for a resin molded product (W) which is used for resin plating and has uneven portions, corner portions and curved surface portions, a part line (52) formed at the time of molding the mold is polished at the peripheral joint portion. A part line polishing apparatus for polishing a flash or a step of a part line (52) that causes a starting point of a crack when the resin molded product (W) is resin-plated, and rotates in a substantially vertical direction. An endless belt-like polishing belt (1) disposed on the surface and a part of the polishing belt (1) are pressed from the back surface so that the inclination angle of the inclined surface of the polishing belt (1) is variable. A movable belt pressing pulley (21) provided on the back surface of the polishing belt (1), and adjacent to the polishing belt (1) and in the part line (52) of the resin molded product (W). , Polishing the polishing belt (1) A plate that is subjected to finish polishing to round off the edge portion that causes crack initiation when the resin is plated, and has a finer file than the polishing belt (1) and is soft in hardness. And a workpiece holder (3) that detachably supports the shaped abrasive plate (2), the resin molded product (W) so that the part line (52) is substantially horizontal, and the workpiece holder ( And 3) a workpiece holder moving mechanism (4) for moving the resin molded product (W) in a substantially horizontal predetermined direction together with the polishing plate (2) following the polishing by the polishing belt (1). An angle (α) formed by the surface to be polished of the polishing belt (1) and the polishing surface of the polishing plate (2) so that the resin molded product (W) is moved quickly for finish polishing. Within 90 to 180 degrees As described above, the polishing belt (1) and the polishing plate (2) are arranged.
例えば、前記ベルト押圧用プーリ（２１）は、前記研磨ベルト（１）裏面に向けて進退自在になる２個の押圧用プーリ（２２）を設け、各押圧用プーリ（２２）の突出距離を異なるように個別に進退させることにより、該研磨ベルト（１）の傾斜面の傾斜角度を可変できるように構成したものである。
あるいは、前記ベルト押圧用プーリ（２１）は、前記研磨ベルト（１）裏面に向けて進退自在になる２個の押圧用プーリ（２２）を連結部材（３１）の両端にそれぞれ取り付け、該連結部材（３１）の中間位置（３２）でシーソー状に回動させることにより、該研磨ベルト（１）の傾斜面の傾斜角度を可変できるように構成したのである。
For example, the pulley for pressing the belt (21) is provided with two pressing pulleys (22) that can move forward and backward toward the back surface of the polishing belt (1), and the protruding distances of the respective pressing pulleys (22) are different. In this way, the inclination angle of the inclined surface of the polishing belt (1) can be varied by advancing and retreating individually.
Alternatively, the belt pressing pulley (21) has two pressing pulleys (22) that can be moved forward and backward toward the back surface of the polishing belt (1), respectively, attached to both ends of the connecting member (31), and the connecting member. The tilt angle of the inclined surface of the polishing belt (1) can be varied by rotating it in a seesaw shape at the intermediate position (32) of (31).
前記研磨板（２）を、回転軸（９）に連結した回転板（１０）に取り付け、かつ該研磨板（２）の研磨面が垂直方向に対して傾斜自在になるように、該回転軸（９）を首振り自在に構成することができる。
前記研磨板（２）を、振動装置に取り付けることができる。
前記研磨板（２）を取り付ける回転板（１０）の中心位置に、前記回転軸（９）の中心軸位置から偏心させる偏心部材（９ａ）を介して該回転軸（９）を連結することができる。
The rotating plate (2) is attached to a rotating plate (10) connected to a rotating shaft (9), and the rotating shaft is arranged so that the polishing surface of the polishing plate (2) is tiltable with respect to the vertical direction. (9) can be configured to swing freely.
The polishing plate (2) can be attached to a vibration device.
The rotary shaft (9) is connected to the center position of the rotary plate (10) to which the polishing plate (2) is attached via an eccentric member (9a) that is eccentric from the center axis position of the rotary shaft (9). it can.
前記研磨ベルト（１）を回転させる装置の一部に、該研磨ベルト（１）に付着した研磨滓を除去するクリーニング機構（１１）を設けることが好ましい。
前記研磨板（２）を保持する回転板（１０）に、前記回転軸（９）の軸方向に複数の噴射孔（４１）を開け、該回転板（１０）に研磨板（２）を取り付けた状態で、この噴射孔（４１）から圧縮空気を噴射させ、該研磨板（２）に付着した研磨滓を除去するように構成することが好ましい。
前記クリーニング機構（１１）は、超音波で洗浄し、水中で洗浄し、振動モータを利用し又は除電エアを噴射させることにより、研磨ベルト（１）に付着した研磨滓を除去する機構である。
前記ワーク保持具（３）には、樹脂成形品（Ｗ）に向けて噴射させる除電エアの噴射口を設けることが好ましい。
前記ワーク保持具可動機構（４）は、略水平方向と上下方向の所定方向に移動させるものである。
It is preferable to provide a cleaning mechanism (11) for removing polishing wrinkles adhering to the polishing belt (1) in a part of the apparatus for rotating the polishing belt (1).
A plurality of injection holes (41) are opened in the axial direction of the rotating shaft (9) in the rotating plate (10) holding the polishing plate (2), and the polishing plate (2) is attached to the rotating plate (10). In this state, it is preferable that compressed air is injected from the injection hole (41) to remove the polishing soot adhering to the polishing plate (2).
The cleaning mechanism (11) is a mechanism that removes polishing soot adhering to the polishing belt (1) by cleaning with ultrasonic waves, cleaning in water, and using a vibration motor or ejecting static elimination air.
It is preferable that the work holder (3) is provided with an ejection port for static elimination air that is ejected toward the resin molded product (W).
The workpiece holder moving mechanism (4) is moved in a predetermined direction of a substantially horizontal direction and a vertical direction.
本発明の研磨方法は、凹凸部、角部や曲面部を有する樹脂成形品（Ｗ）周囲の接合部に、金型成形の際に形成されたパートライン（５２）を研磨する樹脂成形品のパートライン研磨方法であって、前記樹脂成形品（Ｗ）に形成されたパートライン（５２）の凹形状部については、該パートライン（５２）を研磨ベルト（１）の研磨面を近づけ、押し当てながら研磨し、前記樹脂成形品（Ｗ）に形成されたパートライン（５２）の角部や曲面形状部については、該パートライン（５２）が前記研磨ベルト（１）の研磨面を擦るように、該樹脂成形品（Ｗ）を前記研磨ベルト（１）面に対して略直角方向に移動させながら、該
樹脂成形品（Ｗ）の周囲のパートライン（５２）を連続して研磨することにより、該パートライン（５２）が平滑になるように研磨し、更に、前記研磨ベルト（１）を裏面からベルト押圧用プーリ（２１）で押圧して、該研磨ベルト（１）の一部に傾斜面を形成し、樹脂成形品（Ｗ）の上側角部、下側角部に形成されたパートライン（５２）が平滑になるように研磨し、引き続いて、前記樹脂成形品（Ｗ）周囲のパートライン（５２）の凹形状部、角部や曲面形状部について、該パートライン（５２）が板状の研磨板２面を擦るように、該樹脂成形品（Ｗ）を移動させながら、該樹脂成形品（Ｗ）周囲のパートライン（５２）を研磨することにより、前記研磨ベルト（１）の研磨により発生したエッジ部分に丸みを付けるように仕上研磨する、ことを特徴とする。
The polishing method of the present invention is a resin molded product for polishing a part line (52) formed at the time of mold molding at a joint around a resin molded product (W) having uneven portions, corner portions and curved surface portions. In the part line polishing method, the concave part of the part line (52) formed on the resin molded product (W) is pushed by bringing the part line (52) close to the polishing surface of the polishing belt (1). As for the corners and curved surfaces of the part line (52) formed on the resin molded product (W), the part line (52) rubs the polishing surface of the polishing belt (1). Further, the part line (52) around the resin molded product (W) is continuously polished while moving the resin molded product (W) in a direction substantially perpendicular to the surface of the polishing belt (1). Makes the part line (52) smooth. Further, the polishing belt (1) is pressed from the back surface by a belt pressing pulley (21) to form an inclined surface on a part of the polishing belt (1). Polishing is performed so that the part line (52) formed in the upper corner and the lower corner is smooth, and then the concave shape part and corner of the part line (52) around the resin molded product (W). For the curved surface portion, the part line (52) around the resin molded product (W) is moved while moving the resin molded product (W) so that the part line (52) rubs the surface of the plate-like polishing plate 2. ) Is polished so as to round the edge portion generated by the polishing of the polishing belt (1).
または、凹凸部、角部や曲面部を有する樹脂成形品（Ｗ）の周囲の接合部に、金型成形の際に形成されたパートライン（５２）を研磨する樹脂成形品のパートライン研磨方法であって、前記樹脂成形品（Ｗ）の形成されたパートライン（５２）の凹形状部については、該パートライン（５２）を研磨ベルト（１）の研磨面を近づけ、押し当てながら研磨し、前記樹脂成形品（Ｗ）に形成されたパートライン（５２）の角部や曲面形状部については、該パートライン（５２）が前記研磨ベルト（１）の研磨面を擦るように、該樹脂成形品（Ｗ）を略水平方向に移動させながら、該樹脂成形品（Ｗ）の周囲のパートライン（５２）を連続して研磨することにより、該パートライン（５２）を平滑になるように研磨し、更に、前記研磨ベルト（１）を裏面からベルト押圧用プーリ（２１）で押圧して、該研磨ベルト（１）の一部に傾斜面を形成し、樹脂成形品（Ｗ）の上側角部、下側角部に形成されたパートライン（５２）が平滑になるように研磨し、引き続いて、前記樹脂成形品（Ｗ）の周囲のパートライン（５２）の凹形状部、角部や曲面形状部について、該パートライン（５２）が板状の研磨板２面を擦るように、該樹脂成形品（Ｗ）を略水平方向に移動させながら、該樹脂成形品（Ｗ）周囲のパートライン（５２）を連続して研磨することにより、前記研磨ベルト（１）の研磨により発生したエッジ部分に丸みを付けるように仕上研磨する、ことを特徴とする。 Alternatively, a part line polishing method for a resin molded product, in which a part line (52) formed at the time of mold molding is polished at a joint around a resin molded product (W) having an uneven portion, a corner portion or a curved surface portion. The concave part of the part line (52) formed with the resin molded product (W) is polished while pressing the part line (52) close to the polishing surface of the polishing belt (1). As for the corners and the curved surface of the part line (52) formed on the resin molded product (W), the resin is used so that the part line (52) rubs the polishing surface of the polishing belt (1). By continuously polishing the part line (52) around the resin molded product (W) while moving the molded product (W) in a substantially horizontal direction, the part line (52) becomes smooth. Polishing and further polishing belt (1) Parts pressed at the upper and lower corners of the resin molded product (W) by pressing with a belt pressing pulley (21) from the back surface to form an inclined surface on a part of the polishing belt (1). The line (52) is polished so as to be smooth, and subsequently, the concave part, corner part and curved surface part of the part line (52) around the resin molded product (W) are subjected to the part line (52). The part line (52) around the resin molded product (W) is continuously polished while moving the resin molded product (W) in a substantially horizontal direction so as to rub the plate-like polishing plate 2 surface. Thus, finish polishing is performed so as to round the edge portion generated by polishing the polishing belt (1).
前記樹脂成形品（Ｗ）の上側角部又は下側角部に形成されたパートライン（５２）の凹形状部、角部や曲面形状部については、傾斜させた前記板状の研磨板（２）面を擦るように仕上研磨することが好ましい。
前記樹脂成形品（Ｗ）周囲のパートライン（５２）の凹形状部、角部や曲面形状部について、該パートライン（５２）が板状の研磨板２面を擦るように、該樹脂成形品（Ｗ）を移動させ、かつ該板状の研磨板（２）を偏心させて回転させながら、該樹脂成形品（Ｗ）周囲のパートライン（５２）を研磨することにより、前記研磨ベルト（１）の研磨により発生したエッジ部分に丸みを付けるように仕上研磨することが好ましい。
About the concave-shaped part of the part line (52) formed in the upper side corner part or the lower side corner part of the said resin molded product (W), a corner | angular part, and a curved surface shape part, the said plate-shaped grinding | polishing board (2 It is preferable to finish and grind the surface.
The resin molded product (W) is formed so that the part line (52) rubs the surface of the plate-like polishing plate 2 with respect to the concave shape portion, corner portion and curved surface shape portion of the part line (52) around the resin molded product (W). The polishing belt (1) is polished by polishing the part line (52) around the resin molded product (W) while moving (W) and rotating the plate-like polishing plate (2) eccentrically. It is preferable to perform finish polishing so that the edge portion generated by polishing is rounded.
本発明の研磨装置では、研磨ベルト（１）と、仕上研磨する研磨板（２）とを隣接配置したので、研磨ベルト（１）に、樹脂成形品（Ｗ）の外周に形成された凹凸形状部、角部や曲面形状部のパートライン（５２）を当てながら連続研磨し、隣の回転又は振動する研磨板（２）に、樹脂成形品（Ｗ）の周囲のパートライン（５２）が擦るように、樹脂成形品（Ｗ）を略水平方向に移動させながら、この樹脂成形品（Ｗ）周囲のパートライン（５２）を連続して仕上研磨することができる。特に、研磨ベルト（１）に隣接して、９０度から１８０度の範囲内に研磨板（２）を配置したので、研磨ベルト（１）の研磨により発生した、樹脂めっきしたときに、クラックの起点の原因になる樹脂成形品（Ｗ）のエッジ部分については、研磨ベルト（１）よりヤスリ目が細かく、かつその硬さも柔らかい研磨板（２）の仕上研磨により、迅速に丸みを付けることができる。そこで、この樹脂成形品（Ｗ）を樹脂めっきする際に発生する「膨れ」や「クラック」を防止することができる。 In the polishing apparatus of the present invention, since the polishing belt (1) and the polishing plate (2) to be finished are disposed adjacent to each other, the uneven shape formed on the outer periphery of the resin molded product (W) on the polishing belt (1). The part line (52) around the resin molded product (W) is rubbed against the adjacent rotating or vibrating polishing plate (2) while applying the part line (52) of the part, corner part or curved surface shape part. As described above, the part line (52) around the resin molded product (W) can be continuously polished while moving the resin molded product (W) in a substantially horizontal direction. In particular, since the polishing plate (2) is disposed within a range of 90 to 180 degrees adjacent to the polishing belt (1), cracks are generated when resin plating is generated due to polishing of the polishing belt (1). The edge part of the resin molded product (W) that causes the starting point can be rounded quickly by finish polishing of the polishing plate (2) that is finer than the polishing belt (1) and softer in hardness. it can. Therefore, it is possible to prevent “bulging” and “cracking” that occur when the resin molded product (W) is resin-plated.
ベルト押圧用プーリ（２１）を、研磨ベルト（１）の研磨位置を基準にこの位置より、
例えば上方から押圧すると、樹脂成形品（Ｗ）の上方が突出し、下方が引き込んだ状態の傾斜角度を形成し、この傾斜した研磨ベルト（１）では、樹脂成形品（Ｗ）の上側に形成されたパートライン（５２）を研磨するときに適する。逆に、ベルト押圧用プーリ（２１）を、前記研磨ベルト（１）の研磨位置を基準にこの位置より下方から押圧すると、樹脂成形品（Ｗ）の下方が突出し、上方が引き込んだ状態の傾斜角度を形成し、この傾斜した研磨ベルト（１）では、樹脂成形品（Ｗ）の下側に形成されたパートライン（５２）を研磨するときに適する。
The belt pressing pulley (21) is moved from this position with reference to the polishing position of the polishing belt (1).
For example, when pressed from above, the upper part of the resin molded product (W) protrudes and the lower part is retracted, and the inclined polishing belt (1) is formed on the upper side of the resin molded product (W). It is suitable when polishing the part line (52). Conversely, when the belt pressing pulley (21) is pressed from below from the polishing position of the polishing belt (1) as a reference, the lower part of the resin molded product (W) protrudes and the upper part is retracted. The inclined polishing belt (1) having an angle is suitable for polishing the part line (52) formed on the lower side of the resin molded product (W).
回転軸（９）に研磨板（２）を取り付ける回転板（１０）を偏心して連結したものは、研磨板（２）を偏心させて回転させ、樹脂成形品（Ｗ）の周囲のパートライン（５２）を仕上研磨することができる。これにより、樹脂成形品（Ｗ）の研磨面に回転方向の傷を付けないようにすることができる。 In the case where the rotating plate (10) for attaching the polishing plate (2) to the rotating shaft (9) is eccentrically connected, the polishing plate (2) is eccentrically rotated and the part line around the resin molded product (W) ( 52) can be finish polished. Thereby, it is possible to prevent the polishing surface of the resin molded product (W) from being scratched in the rotational direction.
研磨ベルト（１）を回転させる装置の一部に、研磨ベルト（１）に付着した研磨滓を除去するクリーニング機構（１１）を設けたものでは、研磨ベルト（１）の作動中に、研磨滓をクリーニングしながら、樹脂成形品（Ｗ）を研磨することができる。研磨ベルト（１）の研磨面の目詰まりによる研磨能力を低下させることなく連続的に研磨することができる。 In the case where the cleaning mechanism (11) for removing the polishing soot adhering to the polishing belt (1) is provided in a part of the apparatus for rotating the polishing belt (1), the polishing soot is removed during the operation of the polishing belt (1). The resin molded product (W) can be polished while cleaning. Polishing can be performed continuously without reducing the polishing ability due to clogging of the polishing surface of the polishing belt (1).
ワーク保持具可動機構（４）を略水平方向と上下方向の所定方向に移動させることにより、パートライン（５２）が直線的に形成されていない樹脂成形品（Ｗ）であってもその形状に合わせて樹脂成形品（Ｗ）を、水平方向と上下方向の移動を組み合わせながら研磨することができる。同様に、パートライン（５２）が直線的に形成されているものであっても、樹脂成形品（Ｗ）の軸方向に対して傾斜状態でワーク保持具（３）を取り付けたことで、そのパートライン（５２）の形状に合わせて樹脂成形品（Ｗ）を水平方向と上下方向の移動を組み合わせながら研磨することができる。 By moving the workpiece holder moving mechanism (4) in a predetermined direction of substantially horizontal direction and up and down direction, even if it is a resin molded product (W) in which the part line (52) is not linearly formed, the shape thereof is obtained. In addition, the resin molded product (W) can be polished while combining the movement in the horizontal direction and the vertical direction. Similarly, even if the part line (52) is linearly formed, the work holder (3) is attached in an inclined state with respect to the axial direction of the resin molded product (W). According to the shape of the part line (52), the resin molded product (W) can be polished while combining the movement in the horizontal direction and the vertical direction.
本発明の研磨方法では、凹凸部、角部や曲面部を有する樹脂成形品（Ｗ）の周囲に形成されたパートライン（５２）に研磨ベルト（１）を離接しながら、該樹脂成形品（Ｗ）を研磨し、更に曲面形状部のパートライン（５２）を連続研磨することで、平滑な研磨面になるように樹脂成形品（Ｗ）を研磨することができる。または逆に曲面形状部のパートライン（５２）を研磨した後、凹形状部のパートライン（５２）を連続して研磨することができる。 In the polishing method of the present invention, while the polishing belt (1) is separated from and contacted with the part line (52) formed around the resin molded product (W) having the concavo-convex portion, the corner portion and the curved surface portion, the resin molded product ( The resin molded product (W) can be polished so as to have a smooth polished surface by polishing W) and further continuously polishing the part line (52) of the curved surface portion. Or conversely, after polishing the part line (52) of the curved surface portion, the part line (52) of the concave portion can be continuously polished.
研磨ベルト（１）を裏面からベルト押圧用プーリ（２１）で押圧して、研磨ベルト（１）の一部に傾斜面を形成することができ、この傾斜面により樹脂成形品（Ｗ）の上側角部又は下側角部に形成されたパートライン（５２）を研磨することができる。 The polishing belt (1) can be pressed from the back surface with a belt pressing pulley (21) to form an inclined surface on a part of the polishing belt (1), and this inclined surface allows the upper side of the resin molded product (W) to be formed. The part line (52) formed at the corner or the lower corner can be polished.
この研磨ベルト（１）の連続研磨に引き続いて、回転又は振動する板状の研磨板２に対して、樹脂成形品（Ｗ）の周囲のパートライン（５２）が擦るように、樹脂成形品（Ｗ）を略水平方向に移動させながら、この樹脂成形品（Ｗ）周囲のパートライン（５２）を連続して仕上研磨でき、円滑に研磨仕上げを完成させることができる。特に、この板状の研磨板２による仕上研磨では、上述した研磨ベルト（１）の研磨により発生した樹脂成形品（Ｗ）のエッジ部分に、丸みを付けることができるので、この樹脂成形品（Ｗ）を樹脂めっきする際に発生する「膨れ」や「クラック」を防止することができる。
しかも、研磨ベルト（１）による研磨と、回転板状の研磨板（２）による仕上研磨とを組み合わせることで、樹脂成形品（Ｗ）を迅速に研磨することができる。
板状の研磨板２を偏心させて回転させながら、樹脂成形品（Ｗ）の周囲のパートライン（５２）を仕上研磨することで、研磨面に回転方向の傷を付けないようにすることができる。同様に、板状の研磨板２を振動の振幅を可変させながら、樹脂成形品（Ｗ）の周囲の
パートライン（５２）を仕上研磨することで、研磨面に傷を付けないようにすることができる。
Subsequent to the continuous polishing of the polishing belt (1), the resin molded product (52) around the resin molded product (W) is rubbed against the rotating or vibrating plate-shaped polishing plate 2. The part line (52) around the resin molded product (W) can be continuously polished while moving W) in a substantially horizontal direction, and the polishing finish can be completed smoothly. In particular, in the finish polishing by the plate-like polishing plate 2, the edge portion of the resin molded product (W) generated by the polishing of the polishing belt (1) can be rounded. It is possible to prevent “bulging” and “cracking” that occur when W) is resin-plated.
In addition, the resin molded product (W) can be quickly polished by combining polishing with the polishing belt (1) and finish polishing with the rotating plate-like polishing plate (2).
By polishing the part line (52) around the resin molded product (W) while rotating the plate-like polishing plate 2 eccentrically, it is possible to prevent the polishing surface from being scratched in the rotational direction. it can. Similarly, by polishing the part line (52) around the resin molded product (W) while changing the amplitude of vibration of the plate-like polishing plate 2, the polishing surface is not damaged. Can do.
本発明は、凹凸部、角部や曲面部を有する樹脂成形品に形成されたパートラインについて、研磨ベルトによる連続して研磨する研磨ベルトと、研磨板による連続した仕上研磨する研磨板を隣接配置し、これらに対して樹脂成形品を移動させるワーク保持具可動機構とを配置した樹脂成形品のパートライン研磨装置である。 In the present invention, for a part line formed on a resin molded product having an uneven portion, a corner portion or a curved surface portion, a polishing belt that continuously polishes by a polishing belt and a polishing plate that continuously polishes and finishes by a polishing plate are disposed adjacent to each other. A part line polishing apparatus for a resin molded product in which a workpiece holder moving mechanism for moving the resin molded product with respect to these is arranged.
以下、本発明の好ましい実施の形態を図面を参照して説明する。
図１は実施例１の樹脂成形品のパートライン研磨装置を示す概略斜視図である。図２は実施例１の樹脂成形品のパートライン研磨装置を示す概略平面図である。図３は実施例１の樹脂成形品のパートライン研磨装置を示す概略側面図である。
実施例１の本発明のパートライン研磨装置は、樹脂成形品Ｗのパートライン５２を研磨する、略垂直方向に走行する無端ベルト状の研磨ベルト１と、この研磨ベルト１に隣接し、樹脂成形品Ｗのパートライン５２を仕上研磨する研磨板２とを配置したものである。樹脂成形品Ｗは、ワーク保持具３を用いてそのパートライン５２が略水平方向になるように担持するようになっている。このワーク保持具３は、ワーク保持具可動機構４により樹脂成形品Ｗと共に略水平の所定方向に移動させながら、凹凸部、角部や曲面部を有する樹脂成形品Ｗに形成されたパートライン５２を研磨するようになっている。
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
1 is a schematic perspective view showing a part-line polishing apparatus for a resin molded product of Example 1. FIG. FIG. 2 is a schematic plan view showing a part-line polishing apparatus for a resin molded product of Example 1. FIG. 3 is a schematic side view showing a part-line polishing apparatus for a resin molded product of Example 1. FIG.
The part-line polishing apparatus according to the first embodiment of the present invention polishes a part line 52 of a resin molded product W and is an endless belt-like polishing belt 1 that runs in a substantially vertical direction. A polishing plate 2 for finishing and polishing the part line 52 of the product W is disposed. The resin molded product W is supported using the work holder 3 so that the part line 52 is in a substantially horizontal direction. The workpiece holder 3 is a part line 52 formed on the resin molded product W having uneven portions, corner portions, and curved surfaces while being moved in a substantially horizontal predetermined direction together with the resin molded product W by the workpiece holder moving mechanism 4. Is supposed to be polished.
図１から図３の概略図示例では、研磨ベルト１と研磨板２とワーク保持具３とを配置したもののみを示しているが、実際のパートライン研磨装置では、樹脂成形品Ｗのパートラ
イン５２を研磨した研磨滓が飛散しないように、これらの装置を筐体内に収容する。筐体の一面には、樹脂成形品Ｗを出し入れする部分だけにドアを設ける。この筐体の一面は内部が見られるように透明板で製造することが好ましい。研磨ベルト１又は研磨板２による摩擦帯電によって静電気が生じる。その結果、電荷を帯びた研磨滓が樹脂成形品Ｗ、研磨ベルト１、研磨板２、ワーク保持具３又は筐体内壁に付着しやすくなる。そこで、静電気を除去するために除電エアを噴射させる（図示していない）。
1 to 3 show only a configuration in which the polishing belt 1, the polishing plate 2, and the work holder 3 are arranged, but in an actual part line polishing apparatus, the part line of the resin molded product W is shown. These devices are accommodated in a housing so that the polishing rod polished 52 is not scattered. On one surface of the housing, a door is provided only in a portion where the resin molded product W is taken in and out. It is preferable to manufacture one surface of this housing | casing with a transparent plate so that the inside can be seen. Static electricity is generated by frictional charging by the polishing belt 1 or the polishing plate 2. As a result, a charged polishing rod easily adheres to the resin molded product W, the polishing belt 1, the polishing plate 2, the work holder 3, or the inner wall of the housing. Therefore, static elimination air is jetted (not shown) to remove static electricity.
研磨ベルト１による研磨は、樹脂成形品Ｗのパートライン５２のばり又は段差が、この樹脂成形品Ｗをめっき処理した際に、膨れ又はクラックの起点となるため、このばりや段差を除去することを目的とするものである。図１と図３の図示例では、樹脂成形品Ｗを研磨する位置において、研磨ベルト１を上から下に向けて走行させている（矢示線参照）。これは、ワーク保持具３に取り付けた樹脂成形品Ｗが研磨中に外れないようにするためである。ワーク保持具３に対して樹脂成形品Ｗを取り付ける状態に応じて研磨ベルト１の回転方向が決定される。 In polishing with the polishing belt 1, the flash or step of the part line 52 of the resin molded product W becomes a starting point of swelling or cracking when the resin molded product W is plated. It is intended. In the illustrated examples of FIGS. 1 and 3, the polishing belt 1 is run from the top to the bottom at the position where the resin molded product W is polished (see arrow lines). This is to prevent the resin molded product W attached to the workpiece holder 3 from being detached during polishing. The rotation direction of the polishing belt 1 is determined according to the state in which the resin molded product W is attached to the work holder 3.
この研磨ベルト１は、図３の概略側面図に示すように、略四角形状に配置したプーリ５と駆動輪６に掛け渡した。この駆動輪６は、モータ等の駆動機７に連結してプーリ５を回転させるものである。この駆動輪６又はプーリ５のいずれか１個は、研磨装置の使用に際して、研磨ベルト１にテンションをかけるようになっている。本発明の研磨装置を使用していないときは、駆動輪６又はプーリ５を研磨ベルト１に接触させないで、研磨ベルト１が伸びないようにしている。 As shown in the schematic side view of FIG. 3, the polishing belt 1 was wound around a pulley 5 and a drive wheel 6 arranged in a substantially square shape. The driving wheel 6 is connected to a driving machine 7 such as a motor to rotate the pulley 5. Either one of the drive wheel 6 or the pulley 5 applies tension to the polishing belt 1 when the polishing apparatus is used. When the polishing apparatus of the present invention is not used, the driving belt 6 or the pulley 5 is not brought into contact with the polishing belt 1 so that the polishing belt 1 does not extend.
この研磨ベルト１は、例えば布製の研磨ベルトで、ヤスリ目は＃１２０〜２０００が適当であった。この研磨ベルト１は、ベルトの伸びが比較的に小さいものが好ましい。研磨ベルト１の伸びが大きいと、一日の研磨後の製品のばらつきが大きくなるからである。この研磨ベルト１の長さと幅は、樹脂成形品Ｗの寸法やパートライン研磨装置の規模に応じて決定される。 The polishing belt 1 is, for example, a cloth polishing belt, and # 120 to 2000 is suitable for the file. The polishing belt 1 preferably has a relatively small belt elongation. This is because when the elongation of the polishing belt 1 is large, the variation of products after one day of polishing becomes large. The length and width of the polishing belt 1 are determined according to the dimensions of the resin molded product W and the scale of the part line polishing apparatus.
図３に示すように、研磨位置における研磨ベルト１の裏面には、ベルト押圧用プーリ（２１）を配置する。このベルト押圧用プーリ（２１）は、研磨ベルト（１）の研磨位置を挟むように間隔を空けて研磨ベルト１を部分的に押圧する押圧用プーリ（２２）を進退自在に２箇所設けた。棒状部材（２３）の先端に押圧用プーリ（２２）を設け、この棒状部材（２３）は、操作部（２４）で支持され、かつ、図示上の左右方向、即ち、研磨ベルト１の裏面側に近づけるように構成されたものである。具体的には、回転ハンドル（２５）の操作で、進退自在になり、ストッパ（２６）でその位置を維持できるようになっている。各ベルト押圧用プーリ（２１）の突出距離を異なるように個別に進退させることにより、研磨ベルト（１）の傾斜面の傾斜角度を可変できるように構成した。
通常は、図４に示すように、各押圧用プーリ（２２）の突出距離を同一にして研磨ベルト（１）の研磨面を略垂直状態にして使用する。
As shown in FIG. 3, a belt pressing pulley (21) is disposed on the back surface of the polishing belt 1 at the polishing position. In this belt pressing pulley (21), two pressing pulleys (22) for partially pressing the polishing belt 1 at intervals are provided so as to sandwich the polishing position of the polishing belt (1). A pressing pulley (22) is provided at the tip of the rod-like member (23), and this rod-like member (23) is supported by the operation portion (24) and is in the left-right direction in the drawing, that is, the back side of the polishing belt 1 It is comprised so that it may approach. Specifically, it can be moved forward and backward by operating the rotary handle (25), and its position can be maintained by the stopper (26). The inclination angle of the inclined surface of the polishing belt (1) can be varied by individually advancing and retracting the protruding distances of the belt pressing pulleys (21) differently.
Usually, as shown in FIG. 4, the protruding distance of each pressing pulley (22) is made the same, and the polishing surface of the polishing belt (1) is used in a substantially vertical state.
研磨ベルト１が樹脂成形品Ｗのパートライン５２を研磨する面と反対の面を、研磨ベルト１の内側から押圧するパッドを設けることも可能である（図示していない）。このパッドは、上述したベルト押圧用プーリ（２１）に代え又は併せて設ける。このパッドは樹脂成形品Ｗの凹部のパートライン５２を的確に研磨するものである。このパッドにより、樹脂成形品Ｗのパートライン５２の平坦面と曲面を均一に研磨できる。このパッドの前後動の駆動は、樹脂成形品Ｗのパートライン５２の形状に応じて制御するようになっている。例えば、直線形状が多いパートライン５２には、押圧面が直線形状のパッドを用い、凹凸が多いパートライン５２には、押圧面が小さいパッドを用いることで、パートライン５２の様々な形状に対応できるようにする。また、パッドの前後動の駆動制御はプログラムに連動させることができる。 It is also possible to provide a pad for pressing the surface opposite to the surface where the polishing belt 1 polishes the part line 52 of the resin molded product W from the inside of the polishing belt 1 (not shown). This pad is provided in place of or in addition to the belt pressing pulley (21) described above. This pad accurately polishes the part line 52 of the concave portion of the resin molded product W. With this pad, the flat surface and curved surface of the part line 52 of the resin molded product W can be uniformly polished. The back-and-forth movement of the pad is controlled according to the shape of the part line 52 of the resin molded product W. For example, a part line 52 with a large linear shape uses a pad with a straight pressing surface, and a part line 52 with a large number of irregularities uses a pad with a small pressing surface to support various shapes of the part line 52. It can be so. Further, the drive control of the back and forth movement of the pad can be linked to the program.
研磨ベルト１に隣接して研磨板２を配置した。この研磨板２による仕上研磨は、研磨ベルト１の研磨により発生した樹脂成形品Ｗ周囲のエッジ部分についても、この樹脂成形品Ｗを樹脂めっき処理した際に、膨れ又はクラックの原因となるために丸みを付けて、それを防止することを目的とする。 A polishing plate 2 was disposed adjacent to the polishing belt 1. The finish polishing by the polishing plate 2 causes swelling or cracking of the edge portion around the resin molded product W generated by polishing of the polishing belt 1 when the resin molded product W is subjected to resin plating. The purpose is to round and prevent it.
研磨板２は、略水平に配置した回転軸９に連結した回転板１０に取り付けたものである。本発明では図２の概略平面図に示すように、研磨ベルト１の研磨する面と、研磨板２の研磨面とにより形成される角度αが９０度から１８０度の範囲内になるように、研磨ベルト１と研磨板２とを配置した。これは、研磨ベルト１による研磨に引き続いて研磨板２による仕上研磨するために樹脂成形品Ｗを迅速に移動させやすくするためである。 The polishing plate 2 is attached to a rotating plate 10 connected to a rotating shaft 9 arranged substantially horizontally. In the present invention, as shown in the schematic plan view of FIG. 2, the angle α formed by the surface to be polished of the polishing belt 1 and the polishing surface of the polishing plate 2 is in the range of 90 to 180 degrees. A polishing belt 1 and a polishing plate 2 were arranged. This is for facilitating the rapid movement of the resin molded product W in order to perform the final polishing with the polishing plate 2 following the polishing with the polishing belt 1.
研磨ベルト１を走行（回転）させる装置の一部に、研磨ベルト１に付着した研磨滓を除去するクリーニング機構１１を設ける。このクリーニング機構１１では、研磨ベルト１を超音波洗浄する方法を用いた。樹脂成形品Ｗの種類に応じては、水中で洗浄する方法、圧縮空気を吹き付ける方法、振動モータで落下させる方法、除電エアを噴射する方法等を用いることができる。このクリーニング機構１１では冷却効果も期待できる。このクリーニング機構１１により、研磨ベルト１の作動中に、研磨滓を除去しながら、樹脂成形品Ｗを研磨することができる。そこで、研磨ベルト１の研磨面の目詰まりによる研磨能力を低下させることなく連続的に研磨することが可能になる。 A cleaning mechanism 11 that removes polishing wrinkles adhering to the polishing belt 1 is provided in a part of a device that runs (rotates) the polishing belt 1. In this cleaning mechanism 11, a method of ultrasonically cleaning the polishing belt 1 was used. Depending on the type of the resin molded product W, a method of cleaning in water, a method of spraying compressed air, a method of dropping with a vibration motor, a method of spraying static elimination air, and the like can be used. The cleaning mechanism 11 can also be expected to have a cooling effect. With the cleaning mechanism 11, the resin molded product W can be polished while the polishing belt 1 is being operated while removing the polishing wrinkles. Therefore, it is possible to perform continuous polishing without reducing the polishing ability due to clogging of the polishing surface of the polishing belt 1.
なお、図示例の研磨ベルト１の走法方向は、上から下に向けて回転させるものを示している。研磨ベルト１の走法方向は、上から下に向けて回転させるものに限定されない。樹脂成形品Ｗの種類、形状の大小に応じて、研磨ベルト１を水平方向に回転するように配置することも可能である。このときは、研磨板２は、研磨ベルト１の走法方向に対して上側又は下側に配置する。即ち、研磨ベルト（１）に引き続いて研磨板２に、樹脂成形品（Ｗ）を略上下方向に移動させながら連続して仕上研磨できるように配置する。 In addition, the running direction of the polishing belt 1 in the illustrated example indicates that the belt is rotated from top to bottom. The running direction of the polishing belt 1 is not limited to one that rotates from top to bottom. It is also possible to arrange the polishing belt 1 so as to rotate in the horizontal direction according to the type and shape of the resin molded product W. At this time, the polishing plate 2 is disposed on the upper side or the lower side with respect to the running direction of the polishing belt 1. In other words, the resin molded product (W) is arranged on the polishing plate 2 following the polishing belt (1) so that it can be continuously polished while moving the resin molded product (W) substantially vertically.
研磨板２は、上述した研磨ベルト１より細かいヤスリ目であって、硬さが柔らかいものを用いる。この研磨板２は硬すぎると研磨目が粗くなり、めっき後はそこが傷のようになることがあるからである。 The polishing plate 2 is a file that is finer than the above-described polishing belt 1 and has a soft hardness. This is because if the polishing plate 2 is too hard, the polishing grain becomes rough and the plating plate may become scratched after plating.
図示例の研磨板２は、樹脂成形品Ｗを研磨する位置において、上から下に向けて走行（回転）させている。これは、ワーク保持具３に取り付けた樹脂成形品Ｗが研磨中に外れないようにするためである。ワーク保持具３に対して樹脂成形品Ｗを取り付けた状態に応じて研磨板２の回転方向が決定される。 The polishing plate 2 in the illustrated example runs (rotates) from top to bottom at a position where the resin molded product W is polished. This is to prevent the resin molded product W attached to the workpiece holder 3 from being detached during polishing. The rotation direction of the polishing plate 2 is determined according to the state in which the resin molded product W is attached to the workpiece holder 3.
ワーク保持具３は、スタンドの上に棒状の部材１２を立て、この上部に樹脂成形品Ｗの研磨する必要のない部分に開けた孔部分で回動しないように止め、更に枝部１３で上下方向への揺れが生じないように支える。例えば、合成樹脂製の取っ手では、ドア機構としての軸止め用の孔やスリットが開けられた部分を、棒状の部材１２に嵌めこみ、枝部１３で支えて研磨処理中に不要な揺れが生じないようにする。 The work holder 3 has a rod-like member 12 placed on a stand, and is stopped from rotating at a hole portion formed in a portion of the resin molded product W that does not need to be polished. Support so as not to shake in the direction. For example, in a handle made of synthetic resin, a portion with a hole or slit for a shaft stop serving as a door mechanism is fitted into a rod-shaped member 12 and supported by a branch portion 13, and unnecessary shaking occurs during the polishing process. Do not.
ワーク保持具可動機構４は、ワーク保持具３を樹脂成形品Ｗと共に、略水平の所定方向に移動させる機構である。例えば、３軸直交ロボットを用いて、研磨装置内において樹脂成形品Ｗを載せたワーク保持具３を移動させるものである。このワーク保持具可動機構４の動作は、樹脂成形品Ｗのパートライン５２の形状に応じて制御するようになっている。例えば、コンピュータ・プログラムに連動してワーク保持具３を所定の方向に移動させることができる。 The workpiece holder moving mechanism 4 is a mechanism that moves the workpiece holder 3 together with the resin molded product W in a substantially horizontal predetermined direction. For example, the work holder 3 on which the resin molded product W is placed is moved in the polishing apparatus using a three-axis orthogonal robot. The operation of the workpiece holder moving mechanism 4 is controlled according to the shape of the part line 52 of the resin molded product W. For example, the workpiece holder 3 can be moved in a predetermined direction in conjunction with the computer program.
このワーク保持具可動機構４は、必ずしも略水平方向のみ移動させる必要はない。更に上下方向の移動を組み合わせることができる。例えば、パートライン５２が直線的に形成されていない樹脂成形品Ｗであっても、その形状に合わせて樹脂成形品Ｗを水平方向と上下方向の移動を組み合わせながら研磨することができる。同様に、パートライン５２が直線的に形成されている樹脂成形品Ｗであっても、樹脂成形品Ｗの軸方向に対して傾斜状態でワーク保持具３を取り付けたときにも、そのパートライン５２の形状に合わせて樹脂成形品Ｗを水平方向と上下方向の移動を組み合わせながら研磨することができる。
あるいは、ワーク保持具３自体は、昇降し得るように構成することも可能である。
The workpiece holder moving mechanism 4 is not necessarily moved only in the substantially horizontal direction. Furthermore, movement in the vertical direction can be combined. For example, even if the part line 52 is a resin molded product W that is not formed linearly, the resin molded product W can be polished while combining the movement in the horizontal direction and the vertical direction according to the shape. Similarly, even when the part line 52 is a resin molded product W formed linearly, when the workpiece holder 3 is attached in an inclined state with respect to the axial direction of the resin molded product W, the part line 52 According to the shape of 52, the resin molded product W can be polished while combining the movement in the horizontal direction and the vertical direction.
Alternatively, the workpiece holder 3 itself can be configured to be able to move up and down.
図５は研磨装置における樹脂成形品の動作状態を示す説明平面図であり、（ａ）から（ｅ）までは研磨ベルトによる研磨処理の状態、（ｆ）から（ｊ）は研磨板による仕上研磨処理の状態である。図６は樹脂成形品のパートライン研磨方法を示す工程図である。
この樹脂成形品Ｗの凹形状部のパートライン５２に、研磨ベルト１に押し当てながら研磨した後、例えばベルト押圧用プーリ（２１）の各押圧用プーリ（２２）の進退量を調節して、この研磨ベルト１を後退させる。このような研磨ベルト１の位置を変化させることにより、凹部を有する樹脂成形品であっても自動研磨することができる。この凹形状部のパートライン５２が湾曲しているときは、その曲面をなぞるように研磨する。更にパッドを用いて研磨ベルト１の位置調節を図ることも可能である。
FIG. 5 is an explanatory plan view showing the operating state of the resin molded product in the polishing apparatus, wherein (a) to (e) are polishing processes using a polishing belt, and (f) to (j) are finish polishing using a polishing plate. It is the state of processing. FIG. 6 is a process diagram showing a part-line polishing method for a resin molded product.
After polishing while pressing against the polishing belt 1 against the part line 52 of the concave portion of the resin molded product W, for example, adjusting the advance / retreat amount of each pressing pulley (22) of the belt pressing pulley (21), The polishing belt 1 is retracted. By changing the position of the polishing belt 1 as described above, even a resin molded product having a recess can be automatically polished. When the concave part line 52 is curved, it is polished to follow the curved surface. Further, it is possible to adjust the position of the polishing belt 1 using a pad.
この凹形状部のパートライン５２に続けて、図５の（ａ）から（ｅ）に示すように、樹脂成形品Ｗの周囲のパートライン５２を、研磨ベルト１面を擦るように、樹脂成形品Ｗを略水平方向に移動させながら、この樹脂成形品Ｗの周囲のパートラインを連続研磨する。これにより円滑なパートライン５２の研磨を実施することができる。 Subsequently to the concave part part line 52, as shown in FIGS. 5A to 5E, the part line 52 around the resin molded product W is resin-molded so that the surface of the polishing belt 1 is rubbed. While moving the product W in a substantially horizontal direction, the part line around the resin molded product W is continuously polished. Thus, smooth polishing of the part line 52 can be performed.
次に、樹脂成形品Ｗの凹形状部のパートライン５２を、図５の（ｆ）から（ｊ）に示すように、研磨板２に押し当てながら仕上研磨し、樹脂成形品Ｗの周囲のパートライン５２が研磨板２を擦るように、樹脂成形品Ｗを略水平方向に移動させながら、樹脂成形品Ｗの周囲のパートライン５２を連続して仕上研磨する。これにより円滑にパートライン５２の仕上研磨を実施することができる。 Next, as shown in (f) to (j) of FIG. 5, the part line 52 of the concave portion of the resin molded product W is finish-polished while being pressed against the polishing plate 2, and the periphery of the resin molded product W is The part line 52 around the resin molded product W is finish-polished continuously while moving the resin molded product W in a substantially horizontal direction so that the part line 52 rubs the polishing plate 2. Thereby, the finish polishing of the part line 52 can be carried out smoothly.
このように図６の工程図に示すように、凹凸部、角部や曲面部を有する樹脂成形品Ｗに形成されたパートライン５２について、研磨ベルト１による連続した研磨と、研磨板２による連続した仕上研磨が終了したら、ワーク保持具３から取り外し研磨処理が完了する。上述と同様な工程で次の樹脂成形品Ｗをセットする。 Thus, as shown in the process diagram of FIG. 6, continuous polishing by the polishing belt 1 and continuous polishing by the polishing plate 2 are performed on the part line 52 formed on the resin molded product W having uneven portions, corner portions, and curved surface portions. When the finished polishing is completed, it is removed from the work holder 3 and the polishing process is completed. The next resin molded product W is set in the same process as described above.
最後に、研磨ベルト１又は研磨板２による摩擦帯電によって静電気が生じるため、電荷を帯びた研磨滓が樹脂成形品Ｗに付着する。この状態では、樹脂めっきすることができない。そこで、静電気を除去するために除電エアを噴射させ、樹脂成形品Ｗから研磨滓を除去する。 Finally, since static electricity is generated by frictional charging by the polishing belt 1 or the polishing plate 2, a charged polishing rod adheres to the resin molded product W. In this state, resin plating cannot be performed. Therefore, in order to remove static electricity, static elimination air is sprayed to remove the polishing soot from the resin molded product W.
図７は研磨ベルトによるパートライン部分の研磨状態を示す拡大側面図であり、（ａ）は上側角部のパートラインを研磨している状態、（ｂ）は下側角部のパートラインを研磨している状態である。
パートライン５２が樹脂成形品Ｗの上側角部又は下側角部に形成されたものでは、図１２（ａ）、（ｂ）で説明したように、研磨位置における研磨ベルト１が垂直状態であると、パートライン５２以外の部位を研磨するおそれがある。なぜならワーク保持具３に取り付けられた、樹脂成形品Ｗ（パートライン５２）は原則として、水平に移動させる構成になっているからである。そこで、本発明では、樹脂成形品Ｗを微妙に傾斜させるのではなく、研磨ベルト１の一部を傾斜させて樹脂成形品Ｗ（パートライン５２）を研磨する構成にした。
FIGS. 7A and 7B are enlarged side views showing the polishing state of the part line portion by the polishing belt, where FIG. 7A is a state where the upper corner part line is being polished, and FIG. 7B is a lower corner part line being polished. It is in a state of being.
In the case where the part line 52 is formed at the upper corner or the lower corner of the resin molded product W, the polishing belt 1 at the polishing position is in a vertical state as described with reference to FIGS. Then, there is a risk of polishing parts other than the part line 52. This is because, in principle, the resin molded product W (part line 52) attached to the workpiece holder 3 is configured to move horizontally. Therefore, in the present invention, the resin molded product W is not inclined slightly, but a part of the polishing belt 1 is inclined to polish the resin molded product W (part line 52).
上側角部にあるパートライン５２を研磨するときは、図７（ａ）に示すように、回転ハンドル（２５）の操作で、ベルト押圧用プーリ（２１）の上側の押圧用プーリ（２２）を進出させ、逆に下側の押圧用プーリ（２２）を後退させる。この配置により、研磨ベルト１は、その上側が突出し、下側が凹んだ状態の傾斜面を形成する。この研磨ベルト１の傾斜面を利用すれば、上側角部に形成されたパートライン５２を容易に研磨することができる。 When polishing the part line 52 at the upper corner, as shown in FIG. 7 (a), by operating the rotary handle (25), the upper pressing pulley (22) of the belt pressing pulley (21) is moved. On the contrary, the lower pressing pulley (22) is moved backward. With this arrangement, the polishing belt 1 forms an inclined surface in which the upper side protrudes and the lower side is recessed. If the inclined surface of the polishing belt 1 is used, the part line 52 formed at the upper corner can be easily polished.
下側角部にあるパートライン５２を研磨するときは、図７（ｂ）に示すように、回転ハンドル（２５）の操作で、ベルト押圧用プーリ（２１）の上側の押圧用プーリ（２２）を後退させ、逆に下側の押圧用プーリ（２２）を進出させる。この配置により、研磨ベルト１は、その上側が凹み、下側が突出した状態の傾斜面を形成する。この研磨ベルト１の傾斜面を利用すれば、下側角部に形成されたパートライン５２を容易に研磨することができる。このように回転ハンドル（２５）の操作で、研磨ベルト（１）の傾斜面の傾斜角度を微妙に可変できる。ベルト押圧用プーリ（２１）は、樹脂成形品Ｗの上側角部に形成されたパートライン５２を研磨する状態に応じて可変することができる。 When polishing the part line 52 at the lower corner, as shown in FIG. 7 (b), by operating the rotary handle (25), the upper pressing pulley (22) of the belt pressing pulley (21). And the lower pressing pulley (22) is advanced. With this arrangement, the polishing belt 1 forms an inclined surface in which the upper side is recessed and the lower side protrudes. If the inclined surface of the polishing belt 1 is used, the part line 52 formed at the lower corner can be easily polished. In this way, by operating the rotary handle (25), the inclination angle of the inclined surface of the polishing belt (1) can be slightly changed. The belt pressing pulley (21) can be varied according to the state of polishing the part line 52 formed at the upper corner of the resin molded product W.
このベルト押圧用プーリ（２１）により、樹脂成形品Ｗのパートライン５２の平坦面と曲面を均一に研磨できる。例えば、このベルト押圧用プーリ（２１）による研磨ベルト１の傾斜面の調節は、樹脂成形品Ｗのパートライン５２の形状に応じて手動で行うだけでなく、ベルト押圧用プーリ（２１）の進退量の調節制御はコンピュータ・プログラムに連動させることも可能である。 With this belt pressing pulley (21), the flat surface and the curved surface of the part line 52 of the resin molded product W can be uniformly polished. For example, the adjustment of the inclined surface of the polishing belt 1 by the belt pressing pulley (21) is not only manually performed according to the shape of the part line 52 of the resin molded product W, but also the advancement / retraction of the belt pressing pulley (21). The amount control can be linked to a computer program.
勿論、図４で示したように、研磨ベルト１が垂直状態にあるときの方が、樹脂成形品Ｗのパートライン５２を研磨しやすいときは、ベルト押圧用プーリ（２１）の２個の押圧用プーリ（２２）の突出量を同じ距離に配置して研磨することも可能である。なお、研磨ベルト１全体のテンションを考慮して、２個の押圧用プーリ（２２）の突出量を決定することが望ましい。 Of course, as shown in FIG. 4, when the polishing belt 1 is in the vertical state and the part line 52 of the resin molded product W is easily polished, the two pressings of the belt pressing pulley (21) are used. It is also possible to polish by arranging the protruding amount of the pulley (22) for the same distance. Note that it is desirable to determine the protruding amount of the two pressing pulleys (22) in consideration of the tension of the entire polishing belt 1.
図８は実施例２のベルト押圧用プーリを示す拡大側面図であり、（ａ）は上側角部のパートラインを研磨している状態、（ｂ）は下側角部のパートラインを研磨している状態である。
実施例２のベルト押圧用プーリ（２１）は、前述した２個の押圧用プーリ（２２）を進退する構成に代えて、シーソー方式によるものである。このベルト押圧用プーリ（２１）は、研磨ベルト（１）裏面に向けて進退自在になる２個の押圧用プーリ（２２）を両端にそれぞれ取り付け、連結部材（３１）の中間位置（３２）を調節ハンドル（３３）でシーソー状に回動させることにより、研磨ベルト（１）の傾斜面の傾斜角度を可変できるように構成した。
FIGS. 8A and 8B are enlarged side views showing the belt pressing pulley of the second embodiment, in which FIG. 8A shows a state in which the upper corner part line is polished, and FIG. 8B shows a lower corner part line. It is in a state.
The belt pressing pulley (21) of the second embodiment is based on a seesaw system in place of the above-described configuration in which the two pressing pulleys (22) are advanced and retracted. In this belt pressing pulley (21), two pressing pulleys (22) that can be moved back and forth toward the back surface of the polishing belt (1) are respectively attached to both ends, and an intermediate position (32) of the connecting member (31) is provided. The inclination angle of the inclined surface of the polishing belt (1) can be varied by rotating it in a seesaw shape with the adjusting handle (33).
樹脂成形品Ｗの上側角部に形成されたパートライン５２は、図８（ａ）に示すようにベルト押圧用プーリ（２１）を傾斜させて樹脂成形品Ｗを研磨する。逆に、樹脂成形品Ｗの下側角部に形成されたパートライン５２は、図８（ｂ）に示すようにベルト押圧用プーリ（２１）を傾斜させて樹脂成形品Ｗを研磨する。 The part line 52 formed at the upper corner of the resin molded product W polishes the resin molded product W by inclining the belt pressing pulley (21) as shown in FIG. Conversely, the part line 52 formed at the lower corner of the resin molded product W polishes the resin molded product W by inclining the belt pressing pulley (21) as shown in FIG. 8B.
実施例２のベルト押圧用プーリ（２１）は、連結部材（３１）の中間位置（３２）でその角度を調節ハンドル（３３）により可変するだけで、研磨ベルト１の一部に容易に傾斜面を形成することができる。なお、連結部材（３１）の形状は、この円弧形状に限定されず、単純な直線状、Ｖ字形状又はＵ字形状の何れの形状のものを用いることができる。この実施例２のシーソー方式のベルト押圧用プーリ（２１）では、研磨ベルト１のテンショ
ンの調整が容易又は不要になるという特徴がある。
研磨ベルト１の一部に傾斜面を形成する構造は、ベルト押圧用プーリ（２１）は、実施例１又は実施例２の構成に限定されない。
The pulley (21) for pressing the belt according to the second embodiment can be easily inclined on a part of the polishing belt 1 simply by changing the angle of the pulley (21) at the intermediate position (32) of the connecting member (31) with the adjusting handle (33). Can be formed. Note that the shape of the connecting member (31) is not limited to this arc shape, and a simple linear shape, V-shape, or U-shape can be used. The seesaw type belt pressing pulley (21) of the second embodiment is characterized in that adjustment of the tension of the polishing belt 1 is easy or unnecessary.
The structure for forming the inclined surface on a part of the polishing belt 1 is not limited to the configuration of the first or second embodiment of the belt pressing pulley (21).
図９は実施例３の研磨板の研磨滓を除去する噴射孔を開けた回転板を示す横断面図である。
実施例３では、研磨板（２）に付着した研磨滓を除去する噴射孔（４１）を回転板（１０）に開けた。研磨板（２）を長時間使用すると、その樹脂成形品Ｗの研磨面の目詰まりによる研磨能力が低下する。そこで、研磨板（２）を保持する回転板（１０）に、回転軸（９）の軸方向に複数の噴射孔（４１）を開けた。この噴射孔（４１）から圧縮空気を噴射させることで、回転板（１０）に研磨板（２）を取り付けた状態で、研磨板（２）に付着した研磨滓を除去することができる。図示例では、噴射孔（４１）への空気の供給を回転軸（９）を中空にし、そこに空気を送り込む構成を示しているが、この構成に限定されない。
FIG. 9 is a transverse cross-sectional view showing a rotating plate having an injection hole for removing polishing flaws of the polishing plate of Example 3.
In Example 3, the injection hole (41) for removing the polishing flaw adhering to the polishing plate (2) was opened in the rotating plate (10). When the polishing plate (2) is used for a long time, the polishing ability due to clogging of the polishing surface of the resin molded product W is lowered. Therefore, a plurality of injection holes (41) are formed in the rotating plate (10) holding the polishing plate (2) in the axial direction of the rotating shaft (9). By spraying compressed air from the injection hole (41), it is possible to remove the polishing soot adhering to the polishing plate (2) while the polishing plate (2) is attached to the rotating plate (10). In the illustrated example, the air supply to the injection hole (41) is configured such that the rotary shaft (9) is hollow and the air is fed therein, but the present invention is not limited to this configuration.
この噴射孔（４１）から噴射する圧縮空気では冷却効果も期待できる。研磨板（２）の作動中に、研磨滓を除去しながら、樹脂成形品Ｗを研磨することができ、連続的に研磨することが可能になる。 A cooling effect can also be expected from the compressed air injected from the injection hole (41). While the polishing plate (2) is in operation, the resin molded product W can be polished while removing the polishing soot, and can be continuously polished.
図１０は実施例４の板状の研磨板を偏心回転させる状態であり、（ａ）は側面図であり、（ｂ）は正面図である。
実施例３では、研磨板（２）を取り付ける回転板（１０）の中心位置に、回転軸（９）の中心軸位置（ＣＳ）から偏心させる偏心部材（９a）を介して回転軸（９）を連結した
。この板状の研磨板３を偏心させて回転させながら、樹脂成形品Ｗ周囲のパートライン５２を仕上研磨する。このように板状の研磨板２を偏心させて回転させると研磨面に回転方向の傷を付けないようにすることができる。
FIG. 10 shows a state in which the plate-like polishing plate of Example 4 is eccentrically rotated, (a) is a side view, and (b) is a front view.
In Example 3, the rotating shaft (9) is arranged via an eccentric member (9a) that is eccentric from the central axis position (CS) of the rotating shaft (9) at the center position of the rotating plate (10) to which the polishing plate (2) is attached. Were concatenated. The part line 52 around the resin molded product W is finished and polished while the plate-like polishing plate 3 is eccentrically rotated. When the plate-like polishing plate 2 is rotated eccentrically in this way, it is possible to prevent the polishing surface from being scratched in the rotation direction.
実施例５では、板状の研磨板２を振動の振幅を可変させながら、樹脂成形品Ｗの周囲のパートライン５２を仕上研磨する（図示していない）。このように板状の研磨板３をその振動の振幅を可変させる方法でも、研磨面に傷を付けないようにできる。 In the fifth embodiment, the part line 52 around the resin molded product W is finish-polished (not shown) while varying the amplitude of vibration of the plate-like polishing plate 2. Thus, even if the amplitude of the vibration of the plate-like polishing plate 3 is varied, the polishing surface can be prevented from being damaged.
なお、本発明は上述した発明の実施の形態に限定されず、研磨ベルト１と、仕上研磨する板状の研磨板２とを隣接配置すると共に、樹脂成形品Ｗの方向を可変させながら研磨する機構４を設けると共に、樹脂成形品Ｗのパートライン５２の位置に応じて研磨ベルト１又は研磨バフの研磨面を傾斜させることで、パートライン５２が様々な形状からなる樹脂成形品Ｗの何れも研磨処理することができ、かつ迅速に研磨することができる構成であれば、図示したような構造に限定されず、本発明の要旨を逸脱しない範囲で種々変更できることは勿論である。 In addition, this invention is not limited to embodiment of the invention mentioned above, It grind | polishes while arrange | positioning the polishing belt 1 and the plate-shaped grinding | polishing board 2 to finish-polish adjacent, and changing the direction of the resin molded product W. In addition to providing the mechanism 4 and inclining the polishing surface of the polishing belt 1 or the polishing buff according to the position of the part line 52 of the resin molded product W, any of the resin molded products W in which the part line 52 has various shapes. Of course, the structure is not limited to that shown in the drawings as long as it can be polished and can be quickly polished, and various changes can be made without departing from the gist of the present invention.
本発明の樹脂成形品のパートライン研磨装置及びその研磨方法は、凹凸部、角部や曲面部を有する樹脂成形品について利用できるだけでなく、板状の単純な形状の樹脂成形品のパートラインの研磨に利用することができる。 The resin molded product part line polishing apparatus and polishing method of the present invention can be used not only for resin molded products having uneven portions, corner portions and curved surface portions, but also for plate-shaped simple shaped resin molded product part lines. It can be used for polishing.
１ 研磨ベルト
２ 研磨板
３ ワーク保持具
４ ワーク保持具可動機構
９ 回転軸
９ａ 偏心部材
１０ 回転板
１１ クリーニング機構
２１ ベルト押圧用プーリ
２２ 押圧用プーリ
３１ 連結部材
３２ 中間位置
５２ パートライン
Ｗ 樹脂成形品
α 研磨ベルト面と研磨板研磨面とにより形成される角度
DESCRIPTION OF SYMBOLS 1 Polishing belt 2 Polishing plate 3 Work holder 4 Work holder movable mechanism 9 Rotating shaft 9a Eccentric member 10 Rotating plate 11 Cleaning mechanism 21 Pulling pulley for belt 22 Pulling pulley 31 Connecting member 32 Intermediate position 52 Part line W Resin molded product α Angle formed by polishing belt surface and polishing plate polishing surface
Claims (16)
前記樹脂成形品（Ｗ）を樹脂めっきしたときに、クラックの起点の原因になるパートライン（５２）のばり又は段差を研磨する無端ベルト状の研磨ベルト（１）と、
前記研磨ベルト（１）を裏面から押圧して、該研磨ベルト（１）の一部に傾斜面を形成するために、該研磨ベルト（１）を裏面に設けた可動自在になるベルト押圧用プーリ（２１）と、
前記研磨ベルト（１）に隣接すると共に、前記樹脂成形品（Ｗ）のパートライン（５２）に、該研磨ベルト（１）の研磨により発生した、樹脂めっきしたときに、クラックの起点の原因になるエッジ部分に、丸みを付けるための仕上研磨をする、該研磨ベルト（１）よりヤスリ目が細かく、かつその硬さも柔らかい、板状の研磨板（２）と、
前記樹脂成形品（Ｗ）を担持するワーク保持具（３）と、
前記ワーク保持具（３）を樹脂成形品（Ｗ）と共に、所定方向に移動させるワーク保持具可動機構（４）と、から成り、
前記研磨ベルト（１）による研磨に引き続いて前記研磨板（２）による仕上研磨するために樹脂成形品（Ｗ）を迅速に移動させるように、該研磨ベルト（１）の研磨する面と、該研磨板（２）の研磨面とにより形成される角度（α）が９０度から１８０度の範囲内になるように、研磨ベルト（１）と研磨板（２）とを配置した、ことを特徴とする樹脂成形品のパートライン研磨装置。 Part for polishing a part line (52) formed at the time of molding of a resin-molded product (W) that is used for resin plating and has uneven portions, corner portions, and curved portions. A line polishing apparatus,
An endless belt-like polishing belt (1) for polishing a flash or a step of a part line (52) that causes a starting point of a crack when the resin molded product (W) is resin-plated;
In order to press the polishing belt (1) from the back surface and form an inclined surface on a part of the polishing belt (1), the belt pressing pulley which is movable and provided with the polishing belt (1) on the back surface. (21) and
Adjacent to the polishing belt (1), the resin molded product (W) part line (52) is generated by polishing of the polishing belt (1). A plate-like polishing plate (2) having a finer file than the polishing belt (1) and having a softness to the finish, for polishing the edge portion to be rounded;
A workpiece holder (3) carrying the resin molded product (W);
A workpiece holder moving mechanism (4) for moving the workpiece holder (3) together with the resin molded product (W) in a predetermined direction;
A surface to be polished of the polishing belt (1) so that the resin molded article (W) is moved quickly for polishing by the polishing plate (2) following the polishing by the polishing belt (1); The polishing belt (1) and the polishing plate (2) are arranged so that the angle (α) formed by the polishing surface of the polishing plate (2) is in the range of 90 to 180 degrees. Part line polishing equipment for resin molded products.
前記樹脂成形品（Ｗ）を樹脂めっきしたときに、クラックの起点の原因になるパートライン（５２）のばり又は段差を研磨する、略垂直方向に回転するように配置した無端ベルト状の研磨ベルト（１）と、
前記研磨ベルト（１）の一部を裏面から押圧して、該研磨ベルト（１）の傾斜面の傾斜角度を可変可能に形成するために、該研磨ベルト（１）を裏面に設けた可動自在になるベルト押圧用プーリ（２１）と、
前記研磨ベルト（１）に隣接すると共に、前記樹脂成形品（Ｗ）のパートライン（５２）に、該研磨ベルト（１）の研磨により発生した、樹脂めっきしたときに、クラックの起点の原因になるエッジ部分に、丸みを付けるために仕上研磨をする、該研磨ベルト（１）よりヤスリ目が細かく、かつその硬さも柔らかい、板状の研磨板（２）と、
前記樹脂成形品（Ｗ）を、該パートライン（５２）が略水平方向になるように着脱自在に担持するワーク保持具（３）と、
前記ワーク保持具（３）を樹脂成形品（Ｗ）と共に、略水平の所定方向に移動させるワーク保持具可動機構（４）と、から成り、
前記研磨ベルト（１）による研磨に引き続いて前記研磨板（２）による仕上研磨するために樹脂成形品（Ｗ）を迅速に移動させるように、該研磨ベルト（１）の研磨する面と、該研磨板（２）の研磨面とにより形成される角度（α）が９０度から１８０度の範囲内になるように、研磨ベルト（１）と研磨板（２）とを配置した、ことを特徴とする樹脂成形品のパートライン研磨装置。 Part for polishing a part line (52) formed at the time of molding of a resin-molded product (W) that is used for resin plating and has uneven portions, corner portions, and curved portions. A line polishing apparatus,
An endless belt-like polishing belt arranged so as to rotate in a substantially vertical direction for polishing a flash or a step of a part line (52) that causes a starting point of a crack when the resin molded product (W) is resin-plated. (1) and
In order to press a part of the polishing belt (1) from the back surface so that the inclination angle of the inclined surface of the polishing belt (1) is variable, the polishing belt (1) is provided on the back surface and is movable. A belt pressing pulley (21),
Adjacent to the polishing belt (1), the resin molded product (W) part line (52) is generated by polishing of the polishing belt (1). A plate-like polishing plate (2), which is subjected to finish polishing to round the edge portion, which is finer than the polishing belt (1) and whose hardness is soft,
A workpiece holder (3) that detachably supports the resin molded product (W) such that the part line (52) is substantially horizontal;
A workpiece holder movable mechanism (4) for moving the workpiece holder (3) together with the resin molded product (W) in a substantially horizontal predetermined direction;
A surface to be polished of the polishing belt (1) so that the resin molded article (W) is moved quickly for polishing by the polishing plate (2) following the polishing by the polishing belt (1); The polishing belt (1) and the polishing plate (2) are arranged so that the angle (α) formed by the polishing surface of the polishing plate (2) is in the range of 90 to 180 degrees. Part line polishing equipment for resin molded products.
前記樹脂成形品（Ｗ）に形成されたパートライン（５２）の凹形状部については、該パートライン（５２）を研磨ベルト（１）の研磨面を近づけ、押し当てながら研磨し、
前記樹脂成形品（Ｗ）に形成されたパートライン（５２）の角部や曲面形状部については、該パートライン（５２）が前記研磨ベルト（１）の研磨面を擦るように、該樹脂成形品（Ｗ）を前記研磨ベルト（１）面に対して略直角方向に移動させながら、該樹脂成形品（Ｗ）の周囲のパートライン（５２）を連続して研磨することにより、該パートライン（５２）が平滑になるように研磨し、
更に、前記研磨ベルト（１）を裏面からベルト押圧用プーリ（２１）で押圧して、該研磨ベルト（１）の一部に傾斜面を形成し、樹脂成形品（Ｗ）の上側角部、下側角部に形成されたパートライン（５２）が平滑になるように研磨し、
引き続いて、前記樹脂成形品（Ｗ）周囲のパートライン（５２）の凹形状部、角部や曲
面形状部について、該パートライン（５２）が板状の研磨板２面を擦るように、該樹脂成形品（Ｗ）を移動させながら、該樹脂成形品（Ｗ）周囲のパートライン（５２）を研磨することにより、前記研磨ベルト（１）の研磨により発生したエッジ部分に丸みを付けるように仕上研磨する、ことを特徴とする樹脂成形品のパートライン研磨方法。 A method for polishing a part line of a resin molded product, wherein a part line (52) formed at the time of mold molding is polished at a joint around a resin molded product (W) having an uneven part, a corner part or a curved part. ,
For the concave part of the part line (52) formed in the resin molded product (W), the part line (52) is polished while being pressed against the polishing surface of the polishing belt (1),
About the corner | angular part and curved surface shape part of the part line (52) formed in the said resin molded product (W), this resin molding is carried out so that this part line (52) may rub the grinding | polishing surface of the said polishing belt (1). By continuously polishing the part line (52) around the resin molded product (W) while moving the product (W) in a direction substantially perpendicular to the surface of the polishing belt (1), the part line Polish (52) to be smooth,
Further, the polishing belt (1) is pressed from the back by a belt pressing pulley (21) to form an inclined surface in a part of the polishing belt (1), and the upper corner of the resin molded product (W), Polish so that the part line (52) formed in the lower corner is smooth,
Subsequently, the concave part, the corner part and the curved part of the part line (52) around the resin molded product (W) are rubbed against the surface of the plate-like polishing plate 2 so that the part line (52) rubs. By polishing the part line (52) around the resin molded product (W) while moving the resin molded product (W), the edge portion generated by the polishing of the polishing belt (1) is rounded. A part line polishing method for a resin molded product, characterized by finishing polishing.
前記樹脂成形品（Ｗ）の形成されたパートライン（５２）の凹形状部については、該パートライン（５２）を研磨ベルト（１）の研磨面を近づけ、押し当てながら研磨し、
前記樹脂成形品（Ｗ）に形成されたパートライン（５２）の角部や曲面形状部については、該パートライン（５２）が前記研磨ベルト（１）の研磨面を擦るように、該樹脂成形品（Ｗ）を略水平方向に移動させながら、該樹脂成形品（Ｗ）の周囲のパートライン（５２）を連続して研磨することにより、該パートライン（５２）を平滑になるように研磨し、
更に、前記研磨ベルト（１）を裏面からベルト押圧用プーリ（２１）で押圧して、該研磨ベルト（１）の一部に傾斜面を形成し、樹脂成形品（Ｗ）の上側角部、下側角部に形成されたパートライン（５２）が平滑になるように研磨し、
引き続いて、前記樹脂成形品（Ｗ）の周囲のパートライン（５２）の凹形状部、角部や曲面形状部について、該パートライン（５２）が板状の研磨板２面を擦るように、該樹脂成形品（Ｗ）を略水平方向に移動させながら、該樹脂成形品（Ｗ）周囲のパートライン（５２）を連続して研磨することにより、前記研磨ベルト（１）の研磨により発生したエッジ部分に丸みを付けるように仕上研磨する、ことを特徴とする樹脂成形品のパートライン研磨方法。 This is a part line polishing method for a resin molded product, in which a part line (52) formed at the time of mold molding is polished at a joint around a resin molded product (W) having uneven portions, corner portions and curved surface portions. And
For the concave part of the part line (52) in which the resin molded product (W) is formed, the part line (52) is polished while approaching the polishing surface of the polishing belt (1) and pressed,
About the corner | angular part and curved surface shape part of the part line (52) formed in the said resin molded product (W), this resin molding is carried out so that this part line (52) may rub the grinding | polishing surface of the said polishing belt (1). By polishing the part line (52) around the resin molded product (W) continuously while moving the product (W) in a substantially horizontal direction, the part line (52) is polished smoothly. And
Further, the polishing belt (1) is pressed from the back by a belt pressing pulley (21) to form an inclined surface in a part of the polishing belt (1), and the upper corner of the resin molded product (W), Polish so that the part line (52) formed in the lower corner is smooth,
Subsequently, for the concave part, corner part and curved surface part of the part line (52) around the resin molded product (W), the part line (52) rubs the plate-like polishing plate 2 surface, Generated by polishing the polishing belt (1) by continuously polishing the part line (52) around the resin molded product (W) while moving the resin molded product (W) in a substantially horizontal direction. A part line polishing method for a resin molded product, characterized in that finish polishing is performed so as to round the edge portion.
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| CN201110048763.XA CN102371523B (en) | 2010-08-24 | 2011-02-25 | Grinding device of parting line of resin molding and grinding method |
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